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Cheap flights from Ontario to Missouri from C$ 227

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Missouri departing on 24/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
7:10 a.m. - 7:50 a.m.YYZ-STL
25h 40m1 stop
Multiple Airlines Logo
5:11 p.m. - 2:20 p.m.STL-YYZ
20h 09m1 stop
C$ 367Multiple Airlines
Find Deal
Thu, 22 Jan - Sun, 25 Jan
Multiple Airlines Logo
7:15 a.m. - 7:50 a.m.YYZ-STL
25h 35m2 stops
Multiple Airlines Logo
5:44 p.m. - 6:47 a.m.STL-YYZ
12h 03m1 stop
C$ 403Multiple Airlines
Find Deal
Thu, 22 Jan - Sun, 25 Jan
United Airlines Logo
2:15 p.m. - 7:27 p.m.YOW-STL
6h 12m1 stop
United Airlines Logo
6:30 a.m. - 2:27 p.m.STL-YOW
6h 57m2 stops
C$ 420United Airlines
Find Deal
Fri, 23 Jan - Sun, 25 Jan
United Airlines Logo
2:48 p.m. - 10:29 p.m.YOW-MCI
8h 41m1 stop
United Airlines Logo
6:00 a.m. - 2:13 p.m.MCI-YOW
7h 13m2 stops
C$ 420United Airlines
Find Deal
Sun, 5 Apr - Wed, 8 Apr
American Airlines Logo
6:00 a.m. - 4:19 p.m.YYZ-STL
11h 19m1 stop
American Airlines Logo
6:00 a.m. - 4:39 p.m.STL-YYZ
9h 39m2 stops
C$ 423American Airlines
Find Deal
Sat, 13 Dec - Wed, 24 Dec
American Airlines Logo
11:38 a.m. - 6:11 p.m.YYZ-STL
7h 33m1 stop
American Airlines Logo
10:03 a.m. - 9:29 p.m.STL-YYZ
10h 26m1 stop
C$ 437American Airlines
Find Deal
Tue, 24 Feb - Sat, 28 Feb
Air Canada Logo
2:50 p.m. - 10:58 p.m.YOW-STL
9h 08m2 stops
Air Canada Logo
6:30 a.m. - 5:42 p.m.STL-YOW
10h 12m2 stops
C$ 495Air Canada
Find Deal
Fri, 23 Jan - Sun, 25 Jan
Air Canada Logo
2:00 p.m. - 3:29 p.m.YYZ-STL
2h 29mdirect
Air Canada Logo
4:05 p.m. - 7:06 p.m.STL-YYZ
2h 01mdirect
C$ 521Air Canada
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Fri, 26 Dec - Tue, 30 Dec
WestJet Logo
12:13 p.m. - 8:47 p.m.YYZ-STL
9h 34m1 stop
WestJet Logo
12:49 p.m. - 12:18 a.m.STL-YYZ
10h 29m2 stops
C$ 730WestJet
Find Deal
Fri, 5 Dec - Mon, 8 Dec
WestJet Logo
6:10 a.m. - 10:45 a.m.YYZ-STL
5h 35m1 stop
WestJet Logo
12:49 p.m. - 12:18 a.m.STL-YYZ
10h 29m2 stops
C$ 749WestJet
Find Deal
Fri, 5 Dec - Mon, 8 Dec

Air Canada flights from Region of Ontario to Missouri

Our best Air Canada deals on Region of Ontario to Missouri flight tickets
Air Canada
23 Jan
YOW2:50 p.m.Ottawa
9h 08m
2 stops
STL10:58 p.m.Lambert-St Louis
25 Jan
STL6:30 a.m.Lambert-St Louis
10h 12m
2 stops
YOW5:42 p.m.Ottawa
C$ 495
Find similar
Air Canada
26 Dec
YYZ2:00 p.m.Toronto Pearson Intl
2h 29m
STL3:29 p.m.Lambert-St Louis
30 Dec
STL4:05 p.m.Lambert-St Louis
2h 01m
YYZ7:06 p.m.Toronto Pearson Intl
C$ 521
Find similar
Air Canada
17 Dec
YYZ2:00 p.m.Toronto Pearson Intl
2h 29m
STL3:29 p.m.Lambert-St Louis
24 Dec
STL4:05 p.m.Lambert-St Louis
2h 01m
YYZ7:06 p.m.Toronto Pearson Intl
C$ 523
Find similar

Delta flights from Region of Ontario to Missouri

Our best Delta deals on Region of Ontario to Missouri flight tickets
Delta
20 Nov
YYZ12:08 p.m.Toronto Pearson Intl
6h 01m
1 stop
STL5:09 p.m.Lambert-St Louis
24 Nov
STL6:00 a.m.Lambert-St Louis
6h 20m
1 stop
YYZ1:20 p.m.Toronto Pearson Intl
C$ 549
Find similar
Delta
14 Nov
YYZ6:10 a.m.Toronto Pearson Intl
5h 33m
1 stop
STL10:43 a.m.Lambert-St Louis
17 Nov
STL5:17 p.m.Lambert-St Louis
5h 42m
1 stop
YYZ11:59 p.m.Toronto Pearson Intl
C$ 712
Find similar
Delta
5 Dec
YUL12:40 p.m.Montreal Pierre Elliott Trudeau Intl
9h 22m
1 stop
STL9:02 p.m.Lambert-St Louis
8 Dec
STL7:05 a.m.Lambert-St Louis
10h 49m
2 stops
YUL6:54 p.m.Montreal Pierre Elliott Trudeau Intl
C$ 764
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Region of Ontario to Missouri that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 96,600 searches. Data last updated 3 November 2025.
Use the filters below to find and compare flights from Ontario to Missouri that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Thu 22/1

7:10 a.m.-7:50 a.m.

1 stop25h 40m

Lambert-St Louis

Sun 25/1

5:11 p.m.-2:20 p.m.

1 stop20h 09m

C$ 367

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Thu 22/1

7:15 a.m.-7:50 a.m.

2 stops25h 35m

Lambert-St Louis

Sun 25/1

5:44 p.m.-6:47 a.m.

1 stop12h 03m

C$ 403

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Fri 23/1

2:15 p.m.-7:27 p.m.

1 stop6h 12m

Lambert-St Louis

Sun 25/1

6:30 a.m.-2:27 p.m.

2 stops6h 57m

C$ 420

OttawaKansas City

YOW - MCI

YOWMCI

Ottawa

Sun 5/4

2:48 p.m.-10:29 p.m.

1 stop8h 41m

Kansas City

Wed 8/4

6:00 a.m.-2:13 p.m.

2 stops7h 13m

C$ 420

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Sat 13/12

6:00 a.m.-4:19 p.m.

1 stop11h 19m

Lambert-St Louis

Wed 24/12

6:00 a.m.-4:39 p.m.

2 stops9h 39m

C$ 423

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Tue 24/2

11:38 a.m.-6:11 p.m.

1 stop7h 33m

Lambert-St Louis

Sat 28/2

10:03 a.m.-9:29 p.m.

1 stop10h 26m

C$ 437

OttawaSt. Louis

YOW - STL

YOWSTL

Ottawa

Fri 23/1

2:50 p.m.-10:58 p.m.

2 stops9h 08m

Lambert-St Louis

Sun 25/1

6:30 a.m.-5:42 p.m.

2 stops10h 12m

C$ 495

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Fri 26/12

2:00 p.m.-3:29 p.m.

Nonstop2h 29m

Lambert-St Louis

Tue 30/12

4:05 p.m.-7:06 p.m.

Nonstop2h 01m

C$ 521

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Fri 5/12

12:13 p.m.-8:47 p.m.

1 stop9h 34m

Lambert-St Louis

Mon 8/12

12:49 p.m.-12:18 a.m.

2 stops10h 29m

C$ 730

TorontoSt. Louis

YYZ - STL

YYZSTL

Toronto Pearson Intl

Fri 5/12

6:10 a.m.-10:45 a.m.

1 stop5h 35m

Lambert-St Louis

Mon 8/12

12:49 p.m.-12:18 a.m.

2 stops10h 29m

C$ 749

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Missouri from

How to get the cheapest flight ticket from Region of Ontario to Missouri

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Missouri?

The month of November is, on average, the cheapest month to fly to Missouri from Region of Ontario, with most prices found around C$ 671. If you are unable to visit Missouri during the month of November, then departing from Region of Ontario during the month April is also very affordable. Most momondo users find prices during this month for around C$ 677.

What is the cheapest time of day to depart on your flight to Missouri?

Our data shows that the cheapest Region of Ontario to Missouri flights are usually those with departure times in the afternoon. Our users have found flights to Missouri in the afternoon for as low as C$ 782. In the evening is when there is more demand to fly to Missouri, so prices are often more expensive at around C$ 889 per ticket.

What is the cheapest Ontario to Missouri flight route?

Fly from Toronto Pearson Intl to Lambert-St Louis for the best Ontario - Missouri flight prices

How far in advance should I book a flight to Missouri?

You are more likely to see cheaper flights to Missouri from Region of Ontario when booking weeks ahead of your departure date. In general, you can expect to find flights to Missouri for around C$ 789 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Missouri from Region of Ontario for as low as C$ 628 on momondo.

What cabin class options are available on Ontario to Missouri flights?

There is only 1 cabin class available to choose from on Ontario to Missouri flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Region of Ontario to Missouri flights?

No. A direct flight is the cheapest option for a flight between Region of Ontario to Missouri.

Cheap Region of Ontario to Missouri flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Region of Ontario to Missouri

Best price found

C$ 593

Fastest flight time

2h 29m

Direct flights

Every day

Airports in Missouri

1 airport
The best flight deal from Region of Ontario to Missouri found on momondo in the last 72 hours is C$ 593
The fastest flight from Region of Ontario to Missouri takes 2h 29m
Direct flights go from Region of Ontario to Missouri every day.
There is 1 airport near Missouri: Lambert-St Louis (STL)
Search flight deals

  • When did momondo last update prices for flights from Ontario to Missouri?

    Prices for flights from Ontario to Missouri are refreshed on a daily basis.

  • How many operators does momondo search for flights from Ontario to Missouri?

  • How old do you have to be to fly from Ontario to Missouri?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Ontario to Missouri.

  • What documentation or ID do you need to fly to Missouri?

    The necessary travel and health documents for your Missouri trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Region of Ontario to Missouri?

Best airlines flying from Region of Ontario to Missouri

Compare and see reviews for airlines that fly from Region of Ontario to Missouri with momondo
Airline
Rating
Free Cancellation
Price
Air CanadaPriceFrom C$ 433Free CancellationRating
7.1
10,398 reviews
Search Air Canada flights
American AirlinesPriceFrom C$ 436Free CancellationRating
7.2
11,038 reviews
Search American Airlines flights
United AirlinesPriceFrom C$ 472Free CancellationRating
7.4
8,997 reviews
Search United Airlines flights
DeltaPriceFrom C$ 481Free CancellationRating
7.9
8,002 reviews
Search Delta flights
WestJetPriceFrom C$ 565Free CancellationRating
7.2
3,153 reviews
Search WestJet flights

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Missouri?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Missouri from Ontario.

Can I find flights from Ontario to Missouri with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Ontario to Missouri flights to just show those with flexible booking policies.

How can momondo help me find flights from Ontario to Missouri?

Once all potential Ontario to Missouri flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Ontario to Missouri right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Ontario to Missouri flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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